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Holley Ignition Coil Extension Harnesses 558-326 Wiring Harnesses, EFI, LS Harness, 36 in. Long, OE Connectors, Plug & Play, Techflex F6 Loom, Chevy, 4.8-70L, Pair

Holley Ignition Coil Extension Harnesses 558-326 Wiring Harnesses, EFI, LS Harness, 36 in. Long, OE Connectors, Plug & Play, Techflex F6 Loom, Chevy, 4.8-70L, Pair

A$280.88
IN STOCK! Est Ship 4-7 days. In stock at 2 locations (more than 10 available)

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Description

Ignition Wiring Harness - Coil Extension Harness - GM LS-Series - Pair


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:16:38

Data: v4.2 - Upd: 2026-11-08 06:32:19

Features

Vehicle Compatibility and Return Conditions.

This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.

Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.

Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.

(keyword: efi)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Holley, Hilborn, Holley Efi, Retrobright, Terminator X
StreetFX SKU hly558-326
SFX Item ID 4783730
Accounting SKU hly-558-326
Manufacturer SKU 558-326
Manufacturer UPC 090127108475
Alternative References 558-326, HLY-558-326, HOL558-326

Ignition Coil Wiring Harnesses, Holley EFI, LS Coil Extension Harness, 36 in. Long, OE Connectors, Plug & Play, Techflex F6 Loom, Chevy, 4.8-70L, Pair

Designed to extend your factory coil harness so you can easily remote-mount your ignition coils, these wire assemblies by Holley provide an ideal solution for cleaning up the look of your engine bay. They provide the means for mounting your ignition coils off the valve covers with their OEM connectors that provide a secure connection between your ECU and coils. Get the customization you want with the Holley ignition coil extension harnesses designed for your application.

Product Attributes
BrandHolley
Manufacturer's Part Number558-326
Part TypeIgnition Coil Wiring Harnesses
Product LineHolley Ignition Coil Extension Harnesses
UPC090127108475
QuantitySold as a pair.

Compatibility

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